Recording instrument.



A. F. BENSON.

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RECORDING INSTRUMENT.

APPLICATION FILED SEPT. 1o, 1910,

1,054,495, Patented Feb. 25, 1913.

2 SHEETS-SHEET Z.

E moHNfl/s A UNITED sTATEs PATENT oEEIoE.

'ANTHONY FREDERICK BENSON, 0E VIRGINIA, MINNESOTA.

RECORDING INSTRUMENT.

Specification of Letters Patent.

Patented Feb. 25, 1913.

Application filed September 10, 1910. Serial No. 581,401.

. fTo all whom t may concern:

. holes. and from which permanent photographic records may be obtainedof the existing condit-ionsencountered as the instrument islowered downinto the drill hole.

An object of my invention is to provide a device of the class described,by which readings of both dip and bearing can be taken at any point in adrill hole, simultaneously.

A further-object is to provide an instrument by which a photographicrecord may be made of the dip and bearing at any point in a drill hole,whereby a permanent record of existing conditions may be had and keptfor future reference.

The invention consists in the construction and combination of parts tobe more fully described hereinafter and particularly set forth in theclaims.

Reference is to be had to the accompanying drawings forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in all the views, and in which---' Figure 1 shows alongitudinal,- 'sectional view of an embodiment ofmy invention; Fig. 2is an enlarged perspective view of a n agnetic indicator mounted upon asupporting ring; Fig. 3 is a fragmentary, sectional view of a modifiedforml of my invention, which is especially adapted for use in drillholes where the angle between the vertical and the center line is toogreat to be recorded by my preferred form illustrated in Fig. l; andFig. 4 is a plan view of a developed record produced by the instrument.

.Before proceeding to a more detailed description of my invent-ion, itshould be uri-. derstood that in drilling, when it is desiredA toascertain any variation from the original dip and bearing as the holeproceeds, the customary method was to employ hydrofiuoric acid in aglass tube for the dip, and to mark the drill rods as they went down,for the bearing, a vprocess that was both laborious Aand niaccurate,andjrvhich conmany difficulties which arose from the use 0I' theabove-described system, I have provided a device which can be lowereddown the drill holes t-o practically'any depth, and which, at any givenpoint, may be operated to record the dip and bearing, simultaneously, atthat point. To accomplish this, I have provided my instrument with arecording chamber having sensitized paper arranged therewithin, togetherwith the neces- Isary indicating mechanism, which will be described morefully hereinafter. Located within this chamber is a small electric lightglobe, which is manually operable by the person engaged in using theinstrument. When my invention has been lowered to the point at which thedip and bearing are to be taken, the interior of the chamber isilluminated by means of the electric light, and a permanent record Iradeof the exact positions ofthe indicating mechanism upon the sensitizedpaper. IAfter .withdrawing the instrument from the drill hole, thesensitized paper may be removed and developed in a like manner in whichany photographic film is ordinari-ly treated. In this way an exactrecord is procured of the conditions at the point at which the exposurewas made,

sumed much'valuable` time. To obviate the and can be tiled away forfuture reference.

indicate the inclination of the bore to the vertical, angularlymeasured; and the term bearing has reference to the angle between themagnetic north andthe direction of dip.

In the preferred form shown in the drawings, I provide a cylindricalcasing 1, having both its extremities 2 threaded internally. I alsoprovide a head 3, formed of any suitable material, such as brass, steelor the like, having one end thereof sharpened, ando havin at the otherend thereof a reduced portion 4, Vsuitably threaded tojengage the' lowerlthreaded portion of the casing' l. Ada ted to engage the uppenextremityof the cylinldrical caslng is a stopper 5 having the lowerpart 6"thereof reduced and suitably threaded so that it will removably enga-gethe upper extremity ofthe casing. The upper portion 7 .ofthe .stopper 1sprovided with a well awhich will be described more vIcofully'hereinafter. Theupperportion of the E stopper is also reduced andsuitably -threadupper portion formed to constitute a hexagonal nut 10.V.Returning to the stopper 5, it should be mentioned that the latter isprovided with a central bore 11 extending from the well 6a to theinterior of the cylindrical casing 1.l` The bore has the lower exity 19of the cable is bifurcated and projects into the well 6 of the stopper 5to a -point below aring 20, which is also arranged within the well. Thisring is di-- vided by means of an insulating strip 21.

, casing. The construction of the portion of I The wires 18 carried bythe cable, pass through the ring, one wirel oneach side of theinsulating strip, and pass through the cent-ral bore 11 and the tube 12to the electric light globe. lAfter the bifurcated ends of the cablehave been positioned, as heretofore described, in the well, a retainingcomposit-ion 22 of any suitable material, which will be bothof aninsulating character and impervious to water, is placed therein andtends to hold the cable in position. So that the cable may be morefirmly secured, I have also provided a retaining member 23, having itsupper end provided with a flange or extension 24, and its lower edgesuitably beveled to engage the bifurcated ends of the cable, as shown inFig. 1 of the drawings.

The retaining member has also a central bore 25 which is adapted toregister with the opening 16 inthe cap 9 to allow the cable to passinto'the ywell 6a. When in po-fl sition, the upper portion ofthe.retaining member abuts against the lower face of the cap, so that whenthe latter isv adjusted, the' retaining member serves to hold the cablefirmly in position, and to compact the material.

' of any suitable'material, such as. pearl, or

the like, `which vwill prevent the vmercury fromeoming in contact withtheindicator. The indicator is' provided ,at'bothends with ltwo wings31, preferably triangular in form, and madefrom any suitable material,suchas gutta prcha, or the like. Intermediate the ends thereof, theindicator has a beveled side npeningea, thlnngnwhinh, when the indicatoris in'4 position within the casing, the

sharpened point 33 of a ber needle 34:

passes. This needle 34has its lower end 35v suitably lthreaded and isadapted to be received by a correspondingly threaded opening 36 in thehead 3. Arranged within the Casin and abutting against the upperinsuitable material, such as felt or thelike,

vwhich will prevent the mercury fromzamalgamating with the met-a1 usedin the construction of the head.

ace of the head 1s a ring 38 of' any In the modified form illustrated in-Fig.

8 of thev drawings, there is provided a cylindrical casing A having itsextremities B internally threaded, the upper extremity being adapted toremovably receive a sto-pper C which has a reduced threaded portion D,

which engages the upper extremity of the the stopper not shown in Fig.8, together. with the means for lowering the instrument into the bore,is similar to that shown .in Fig. 1 of the drawings, andv` which hasalready been referred 4to in describing the preferred'form. The stopperhas a central bore E through which wires F pass. I have provided ahead Gsimilar in form tol that shown in Fig. 1, and having its upper extremityH reduced and threaded, so that it will removably engage the lowerextremity B of the casing A. Located with- -in the Casin A and nbnaingngninnt the f lower face o the stopper C is an insulating member Ihaving a portion J cut away to allow the wires F to pass therethrough.vIt

might be mentioned that near the lower end.

loo

of the bore E vinthe stopper, there is a i3- lholding member K formedofvany vsuit-able insulating material, lthrough which the wires F pass.The chamber L, which is formed within thecasing A, is adapted to havearranged therewithin a member M,

` such as sensitized paper o-r the like, and to v have a furtherprotecting member N of any suitable transparent material, which willabut against the inner face of the sensi- .tized paper to protect thesame. -The casing ispart-ially filled with a fluid O, such as mercury orthe like, upon which is' adapted to loat a magnetic indicator Pidentical in form to that shown and described in Fig. 2

of the drawings. Returning to the head G,

the latter has a conduit Q, extending from the portion I -I to a pointwhere it connects with a well R in the upper face of the head. Adaptedto be arranged within said well and tol project 4within the chamber L is:t

liber member S., This member has an opening T near the base thereof,which registers with the conduitQ. As shown in Fig. 3, the wires F,after passing through the opening formed a-t the cut-awayAVV portion Jof the member I, pass around the chamber L `flexible cable U. The cableterminates at a sleeve V mounted on a float lV, thesleevel carrying asocket X, upon which is arranged an electric light bulb Y. When thedevice kis operatively assembled, the sleeve V passes through thebeveled opening in the center of the indicator P, as shown in Fig. 3 ofthe 4drawings.

In the operation of my device, the latter is lowered down into a drillhole t-o any required depth at which it is desired to ascertain the dipand bearing of the-bore. When the instrument has reached this point,time is given for the mercury within the casing to come to rest. Theindi'- cating mechanisnn which includes the ring 30 and the indicator29, will assume a position in the magnetic meridian. When this hasresulted, the electric light bulb 15 is lighted by the one operating theinstrument, the current being generated by means of a small dynamo, orthe like. This causes an exposure of that part of the sensitized paperwhich is above the mercury, While simultaneously, through the agency ofthe Wings 31 on the/indicator, a portion of the paper at the north andsouth points is screened from the rays of light. On account of each setof wings being-substantially parallel, certain' rays of light Will passthrough the openings' between Vthe membersv of each pair, and on thataccount sharply record the position of the indicator on the paper. Asthese pairs of Wings are oppositely disposed to one another, they admitlight practically only in a vertical plane, and therefore, images of theopenings between thesev wings'on thedeveloped paper will show the northand south regardless of any eccentricity at the'center ot' 4the needle.'After the exposure has been taken, the instrument is 'drawn from thebore and the 'stopper unsere-wed from the casing. The exposed paper isthen removed and developed. 'f g The modified form illustrated in Fig. 3is to be used in drill holes Where the angle between the vertical andthe center line of the bore is too great to be recorded by the.instrument shown in the preferred form.v This modiied form ismanipulated in a manner similar to that of the other form, but has thisadvantage, that 'the interior of the chamber is completely surrounded bysensitized paper, so that no matter at what angle the -instrument may bepositioned, an exposure, will show the exact position of the indicatingmechanism, even though the axis of the instrument might be in asubstantially horizontal plane.

It might be added that a reversed photo-V derences of theline c.

graphic film can be used in lieu of the photographic paper andtransparent film as described, without necessitating the use of anyadditional structure, should it be so desired.

In Fig. 4 I have shown a developed record produced upon the sensitizedcylindrical member 26, the same being flattened out. Upon the recordappears a dark portion 26a and a light portion 26h. The line ofdemarcation between these portions is of the curved form resulting fromthe development of a cylinder intersected by a plane at an angle to thelongitudinal axis of the cylinder. This line, c, indicates the outlineof 'the surface of the mercury when the electric i light was illuminatedto produce the photographic record. The dark part of the record wasproduced by the action of the light uponv the sensitized cylinder, thelight part, being covered by mercury, was not affected by theillumination. The corresponding high and low points a and b of the line0 indicate diametrically opposite points of the cylinder, the linejoining these points in the cylinder being the direction of the bearingof the instrument. Upon the darkened part of the record appear pairs oflighter spots, showing where the light was shaded .by the interpositionof the wings 31. The -line joining these point-s when the photographicrecord was made is a meridian one.

Consequently, the relation between the points a and b and the points d,will indif cate the bearing of the instrument at the time the record wasmade, 'In the developed record, shown for example, herewith, the pointsd coincide with the points a and b, so that it appears that the bearingof the drill bore at the point where the record was made, was due northand south. The dip of the drill bore at the point where the record ismade, is indicated by the height This is obviously so because the'dipcontrols the relative angularity Vof the plane forming the surface ofthe mercury and the longitudinalaxis of the cylinder.

Having thus described my invention, I

claim as new, and desire to secure by Letters Patent: l Y

1. In a device of the class described, 'a

,bod adapted to pass into adrill bore, a.

iu therein, a member having a sensitized surface partly covered bysaid'- fluid, and means or roducing a record upon a part of said sur aceabove said fluid.

2. In a device of the class described a body adapted to pass into adrill bore, an opaque iuid within said body, a'member encompassing thebody of said fluidi and partly covered thereby, said member having' asensitized surface,'and' means for making a photographic record uponsaid sensitized surface, above said Huid, whereby the line of contactbetween said duid and said surface will appear in the photographicrecord.

s maintain -a normally horizontal position,

and a position in the magnetic meridian, and means within ,saidbody andcontrollable from a point remote therefrom, tor making a permanentrecord of the dip and the bearing of said body relative to said member.y

5. A deviceot the class described, comprising a body adapted to passinto a bore, a sensitized member therein adapted to receiveaphotographicrecord, aiioating member in said body and adapted to maintain a positionof normal dip and' bearing, and

`means for producing light within saidbody to make upon said sensitizedmember a photo-graphic record of the position of said doating memberrelative to said body, at any desired point of the bore through whichsaid body is passing. v

6. A device of the class` described, comprising a body adapted to passinto a bore, a sensitized member therein adapted to receive aphotographic record, a fluid within said body, a member/doating upon theAsurface of said Huid, and tending to maintain a position in themagnetic meridian, said member constituting an indicator, and means forproducing an illumination within said body to record the position otsaid'in-'f dicator photographically upon `said sensitized member.,y

7. device of the class described, comprising a hollow body having aduidt-herein and adapted to pass into a bore, an indicator floating uponsaid duid, a sensitized member within said body and adapted to have aphotographic record produced there- -on, an velectric light within saidbody, and

means for conducting current to said light;

8. ln a device of the class described, a hollow body adapted to passinto a bore'and containing a fluid, an indicator floating upon saidfluid, said indicator tending to maintain a position in the magneticmeridian, a sensitized member within. said body and extending around"the inner wall thereof, means for holding said indicator central, anelectric light vwithin said body, and av cable for conducting current tosaid light, and for lowering and raising saidbody.

9. In a device of the class described, a

l hollow body adapted 'to passinto a bore, a

sensitized member within said body and extending around the same, atransparent member within i said 'body and extending 65 around the sameinside of said sensitized member, a fluid within said last-mentionedmember, a fioating indicator supported upon the surface of said Huid andtending to maintain a position in the magnetic meridian, an electriclight within said body, a cable forconducting current to said light,said cable serving for raising and lowering said body, and means forsecuring said cable to said body.

10. In a device of the class described, a hollow body adapted to passinto a bore, a sensitized member within said body and extending entirelyaround t'he same, a trans-- parent protective member within saidsensitized member and extending entirely around the same, a iuid withinsaid bodyand within said last-mentioned member; a oating indicatorsupported .upon the surface of said fluid and tending to maintain `aposition alined wit-h the magnetic meridian, an

electric light within said body above said indicator and adapted whenilluminated to tion of said indicator upon said sensitized member, acablefor conducting the current to said light, said cable serving forraising and lowernng said body, lmeans for securing said cable to saidbody, and a member within'saidbody and serving to movably center saidindicator.

il. lin a device of the class described, a hollow body adapted tol passinto a bore, a Huid partly filling said body, a sensitized sheet withinsaid body, means for protecting said sensitized sheetfrom said fluid, anindicator floating upon said fluid and tending to maintain a position ofnormal dip and bearing, and means for producing a photographic record ofthe position of said indicator upon said sensitized sheet at any Idesired point of the bore.

l2. In adevice of the class described, a hollow body adapted to passinto a bore, a

fluid partly filling said body,fa sensitized member within said body, anindicator Hoatingupon the surface of said fluid and of magnetic naturewhereby` it tends to maintain a position in the magnetic meridian,

an electric light within said body, and

means for illuminating said light to produce a photographic record uponsaid sensitized member of the position of said indicator relative tosaidfbody, .said body having therein a" needle for movably centeringsaid provided wittrwings for producing images of predetermined form uponsaid sensitized p member.

13. In a device-.of the class described, ai25 12o. indicator,said-indicator at the ends being,

casing and extending around the same, a fluid Within said casing andpartly tilling,r the same, a magnetic indicator floating upon saidfluid, said body having a needle for movably centering said indicator,an electric light within said casing, and a cable secured to saidstopper and serving to conduct current to said lightand for raising andlowering said body.

14. In a device of the class described, a hollow body' adapted to passinto a bore, and comprising a cylindrical casing, a head at. one endthereof, and a stopper at the other end thereof, a sensitized memberWithin said casing and encompassing the same, a fluid partly vfillingsaid casing, said head having a needle extending' into said casing, anindicator floating upon said fluid and moving to centervby said needle,said indicator having at the ends Wings, an electric light Within saidcasing, said stopper having a Well, a cable extending into said Well,means for securing said cable to said stopper, said. stop-per havingtherein conductors, and further conductors connecting said conductors ofsaid cable to said well for carrying current to said light.

15. In a device of the class described, a n,

body having a floating indicator therein, a sensitized member, a lightfor producing a photographic record of said indicator upon saidsensitized member, said body having at the upper end a stopper providedWith a well, a cable having the end located in said Well, a plasticmaterial within said Well and serving for securing the end of said cabletherein, a retaining member projected partly into said Well, a capmovably associated with said stopper and serving to secure saidretaining member in position, and conductors for connecting said cableto said light. i

In testimony whereof I have signed my name to this specification in thepresence of two subscribing Witnesses.

ANTHONY FREDERICK BENSON.

Witnesses:

I-I. B. CHASE, ANNABEL FLESCH.

